Shoe upper



FIG. 1 is a front perspective view of a shoe upper showing my new design;

FIG. 2 is a side view thereof; and,

FIG. 3 is a rear perspective view thereof.

The spaced line segments within the shaded area constitute part of the claimed design. The uneven-length broken lines immediately adjacent to and surrounding the shaded area represent unclaimed boundaries of the design. The uneven-length broken lines showing the remainder of the shoe are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a shoe upper, as shown and described. 